## Abstract In this article, we study topology of complete non‐compact Riemannian manifolds. We show that a complete open manifold with quadratic curvature decay is diffeomorphic to a Euclidean __n__ ‐space ℝ^__n__^ if it contains enough rays starting from the base point. We also show that a compl
Closed graph and open mapping theorems for topological -modules and applications
✍ Scribed by Claudia Garetto
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 369 KB
- Volume
- 282
- Category
- Article
- ISSN
- 0025-584X
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
We present closed graph and open mapping theorems for $ \tilde \lc $‐linear maps acting between suitable classes of topological and locally convex topological $ \tilde \lc $‐modules. This is done by adaptation of De Wilde's theory of webbed spaces and Adasch–Ernst–Keim's theory of barrelled spaces to the context of locally convex and topological $ \tilde \lc $‐modules, respectively. We give applications of the previous theorems to Colombeau theory as well to the theory of Banach $ \tilde \lc $‐modules. In particular we obtain a necessary condition for 𝒢^∞^‐hypoellipticity on the symbol of a partial differential operator with generalized constant coefficients (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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